CN115453099A - Road test load spectrum determination method and device, readable storage medium and electronic equipment - Google Patents
Road test load spectrum determination method and device, readable storage medium and electronic equipment Download PDFInfo
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Abstract
The invention discloses a road test load spectrum determination method, a road test load spectrum determination device, a readable storage medium and electronic equipment, wherein the method comprises the following steps: acquiring an original load spectrum of a road test, and segmenting the original load spectrum according to each working condition in the original load spectrum to obtain a plurality of segments of original load spectrums; respectively acquiring the damage of each signal channel under each working condition according to all the signal channels under each working condition in the multi-segment original load spectrum; obtaining the total damage of each signal channel of the road test according to the standard cycle number of the road test and the damage of each signal channel, and determining the damage ratio of each working condition under each signal channel; and acquiring a damage ratio matrix of the damage ratio of each working condition in each signal channel, and determining the target cycle number of each working condition according to the damage ratio matrix and the total damage of each signal channel of the road test to determine the target load spectrum of the road test. The problem of among the prior art test time long when carrying out vehicle road test is solved.
Description
Technical Field
The invention relates to the technical field of vehicles, in particular to a road test load spectrum determining method and device, a readable storage medium and electronic equipment.
Background
With the continuous development of society, automobiles enter thousands of households, and each automobile can carry out road tests on the automobiles before being produced and delivered from factories so as to obtain some important parameters of the automobiles and have a primary understanding and control on the quality of the automobiles.
The automobile road simulation test is to enable a whole automobile or a system assembly to reproduce the vibration process of a whole automobile road test on a test bed by a remote data iteration technology, and in order to ensure that the bed road simulation test is equivalent to the whole automobile road test at the present stage, the general method is to directly use a road test target load spectrum for the bed road simulation test without excessively editing and processing a target signal, so that the test process can ensure that the vibration effect of the bed road simulation and the whole automobile road test is the same, but the test time of the road simulation test is consistent with the time of the whole automobile road test, and the purposes of acceleration test and rapid verification cannot be achieved.
In the existing load spectrum processing method for the road simulation test, a load spectrum of a connecting road surface is removed, so that the total time of the road simulation test and the whole vehicle road test time are relatively reduced, but the time reduced by removing the load spectrum of the connecting road surface is still less, so that the test time is still longer.
Disclosure of Invention
In view of this, the present invention aims to provide a method, an apparatus, a readable storage medium and a vehicle for determining a road test load spectrum, which aim to solve the problem in the prior art that the experience of passengers on the vehicle is poor.
The embodiment of the invention is realized as follows:
a method of road test load spectrum determination, the method comprising:
acquiring an original load spectrum of a road test, and segmenting the original load spectrum according to each working condition in the original load spectrum to obtain a plurality of segments of original load spectrums;
respectively acquiring the damage of each signal channel under each working condition according to all the signal channels under each working condition in the multi-segment original load spectrum;
obtaining the total damage of each signal channel of the road test according to the standard cycle number of the road test and the damage of each signal channel, and determining the damage proportion of each working condition under each signal channel;
and acquiring a damage ratio matrix of the damage ratio of each working condition under each signal channel, and determining the target cycle number of each working condition according to the damage ratio matrix, the test time of each working condition and the total damage of each signal channel of the road test so as to determine the target load spectrum of the road test.
Further, the method for determining a load spectrum of a road test, wherein the step of obtaining a total damage of each signal channel of the road test according to the number of normative cycles of the road test and damages of each signal channel, and determining a damage ratio of each working condition in each signal channel further includes:
judging whether a target working condition lower than a damage threshold exists in each working condition according to the damage of each signal channel;
and if so, removing the target working condition, executing the total damage of each signal channel of the road test, which is obtained according to the standard cycle number of the road test and the damage of each signal channel, and determining the damage ratio of each working condition under each signal channel.
Further, the method for determining a road test load spectrum, where the step of obtaining a damage ratio matrix of the damage ratio of each working condition in each signal channel, and determining the target cycle number of each working condition according to the damage ratio matrix, the test time of each working condition, and the total damage of each signal channel of the road test to determine the target load spectrum of the road test further includes:
acquiring the test time of each working condition, and judging whether the working condition to be removed meeting a preset removing condition exists in each working condition;
if so, removing the working condition to be removed, then executing the step of obtaining a damage proportion matrix of the damage proportion of each working condition under each signal channel, and determining the target cycle number of each working condition according to the damage proportion matrix, the test time of each working condition and the total damage of each signal channel of the road test so as to determine the target load spectrum of the road test;
and the preset removing condition is that the damage ratio of the working condition to be removed and the test time are both lower than a preset threshold value.
Further, in the method for determining a load spectrum of a road test, the step of obtaining a damage ratio matrix of the damage ratio of each working condition in each signal channel, and determining the target cycle number of each working condition according to the damage ratio matrix, the test time of each working condition, and the total damage of each signal channel of the road test to determine the target load spectrum of the road test includes:
obtaining a damage ratio matrix according to the damage ratio of each working condition under each signal channel, and determining a cycle number matrix of the road test according to an equivalent principle of total damage of each signal channel of the road test so as to determine an initial target cycle number of each working condition;
and screening the initial target cycle number according to the test time of each working condition to obtain the target cycle number.
Further, the method for determining a road test load spectrum, wherein the step of obtaining a damage ratio matrix of the damage ratio of each working condition in each signal channel, and determining the target cycle number of each working condition according to the damage ratio matrix, the test time of each working condition, and the total damage of each signal channel of the road test to determine the target load spectrum of the road test further includes:
acquiring the test time and the damage ratio of each working condition, and judging whether each working condition meets the condition of reducing the target cycle number or not according to the test time and the damage ratio;
if yes, reducing the target cycle number according to a preset rule;
wherein the target cycle number reduction condition is that the test time and the damage proportion both satisfy a target cycle number reduction threshold.
It is another object of the present invention to provide a road test load spectrum determination apparatus, comprising:
the segmentation module is used for obtaining an original load spectrum of a road test and segmenting the original load spectrum according to each working condition in the original load spectrum to obtain a plurality of segments of original load spectrums;
the acquisition module is used for respectively acquiring the damage of each signal channel under each working condition according to all the signal channels under each working condition in the multi-segment sub-original load spectrum;
the damage ratio determining module is used for obtaining the total damage of each signal channel of the road test according to the standard cycle number of the road test and the damage of each signal channel, and determining the damage ratio of each working condition under each signal channel;
and the target load spectrum determining module is used for acquiring a damage proportion matrix of the damage proportion of each working condition in each signal channel, and determining the target cycle number of each working condition according to the damage proportion matrix, the test time of each working condition and the total damage of each signal channel of the road test so as to determine the target load spectrum of the road test.
Further, the above road test load spectrum determination apparatus further includes:
the first judgment module is used for judging whether a target working condition lower than a damage threshold exists in each working condition according to the damage of each signal channel;
and if so, removing the target working condition, executing the total damage of each signal channel of the road test, which is obtained according to the standard cycle number of the road test and the damage of each signal channel, and determining the damage ratio of each working condition under each signal channel.
Further, the above road test load spectrum determination apparatus further includes:
the second judgment module is used for acquiring the test time of each working condition and judging whether the working condition to be removed meeting the preset removal condition exists in each working condition or not;
if so, removing the working condition to be removed, then executing the step of obtaining a damage proportion matrix of the damage proportion of each working condition under each signal channel, and determining the target cycle number of each working condition according to the damage proportion matrix, the test time of each working condition and the total damage of each signal channel of the road test so as to determine the target load spectrum of the road test;
and the preset removing condition is that the damage ratio of the working condition to be removed and the test time are both lower than a preset threshold value.
It is a further object of embodiments of the present invention to provide a readable storage medium, on which a computer program is stored, which program, when being executed by a processor, carries out the steps of the method as described above.
It is a further object of embodiments of the present invention to provide an electronic device, comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the steps of the method as described above when executing the program.
According to the embodiment of the invention, by carrying out segmentation analysis on each working condition of an original load spectrum of a road test and determining the corresponding damage, and by carrying out total damage of each signal channel calculated through the damage and analysis on the damage proportion of each working condition, the working condition cycle number with long time and small damage proportion can be reduced, while the working condition cycle number with short time and large damage proportion is correspondingly increased, so that the total bench test time is shortened on the premise of ensuring the total damage of the original road test, and the problem of long test time in the road test in the prior art is solved.
Drawings
FIG. 1 is a flow chart of a road test load spectrum determination method according to a first embodiment of the present invention;
FIG. 2 is a block diagram showing a load spectrum determining apparatus for a road test according to a third embodiment of the present invention;
the following detailed description will further illustrate the invention in conjunction with the above-described figures.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Several embodiments of the invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for purposes of illustration only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed types.
How to shorten the time period in the road test will be described in detail below with reference to the specific embodiments and the accompanying drawings.
Example one
Referring to fig. 1, a method for determining a road test load spectrum according to a first embodiment of the present invention is shown, and the method includes steps S10 to S13.
And S10, acquiring an original load spectrum of a road test, and segmenting the original load spectrum according to each working condition in the original load spectrum to obtain a plurality of segments of original load spectrums.
Specifically, the original load spectrum is the load spectrum of the existing road simulation test through a rack, wherein each working condition has a corresponding segment on the load spectrum, the original load spectrum is segmented according to the type of the working condition, for example, a certain road test specification contains 12 working conditions, and the load spectrum corresponding to the 12 working conditions on the original load spectrum is analyzed and intercepted to be respectively used as the sub-original load spectrum of each working condition.
And S11, respectively acquiring the damage of each signal channel under each working condition according to all the signal channels of each working condition in the multi-segment original load spectrum.
The sub-original load spectrum is formed by being divided according to different working conditions, the damage under a certain working condition in the whole road test can be obtained through the sub-original load spectrum, and a plurality of signal channels are arranged on the load spectrum during each road test, so that the damage of each signal channel under each working condition is obtained from the sub-original load spectrum.
And S12, obtaining the total damage of each signal channel of the road test according to the standard cycle number of the road test and the damage of each signal channel, and determining the damage ratio of each working condition under each signal channel.
Specifically, the total road test damage under each signal channel and the damage proportion of each working condition under each channel are obtained according to the standard cycle number of the road test and the obtained damage of each signal channel.
And S13, acquiring a damage ratio matrix of the damage ratio of each working condition under each signal channel, and determining the target cycle number of each working condition according to the damage ratio matrix, the test time of each working condition and the total damage of each signal channel of the road test to determine the target load spectrum of the road test.
Specifically, according to a damage equivalent principle, a matrix calculates a new cycle number of working conditions, and the cycle number is selected according to the test time of each working condition, namely, the cycle number of the working condition with long time and small damage ratio is reduced, the cycle number of the working condition with short time and large damage ratio is correspondingly increased, and a target cycle number of a new road test is obtained, so that a target load spectrum of the new load spectrum of the road test is determined.
More specifically, in some alternative embodiments of the present invention, the step of obtaining a damage ratio matrix of the damage ratio of each operating condition in each signal channel, and determining the target cycle number of each operating condition according to the damage ratio matrix, the test time of each operating condition, and the total damage of each signal channel of the road test to determine the target load spectrum of the road test includes:
obtaining a damage ratio matrix according to the damage ratio of each working condition under each signal channel, and determining a cycle number matrix of the road test according to an equivalent principle of total damage of each signal channel of the road test so as to determine an initial target cycle number of each working condition;
and screening the initial target cycle number according to the test time of each working condition to obtain the target cycle number.
In specific implementation, when the damage proportion matrix is multiplied by the preset cycle number matrix to ensure that the total damage of each signal channel is equivalent to the total damage after cycle number modification, the numerical value in the preset cycle number matrix is the corresponding initial target cycle number of each working condition, and then the initial target cycle number can be selected according to the test time of each working condition to obtain the target cycle number.
In summary, in the method for determining a road test load spectrum in the above embodiment of the present invention, by performing a segmentation analysis on each working condition of an original load spectrum of a road test and determining a corresponding damage, and by performing a total damage of each signal channel calculated by the damage and an analysis on a damage ratio of each working condition, a number of working condition cycles with a long time and a small damage ratio can be reduced, and a number of working condition cycles with a short time and a large damage ratio can be increased accordingly, so that a total bench test time is shortened on the premise of ensuring the total damage of the original road test, and a problem of a long test time in performing a road test in the prior art is solved.
Example two
The embodiment of the present invention also provides a method for determining a road test load spectrum, where the method for determining a road test load spectrum in the embodiment is different from the method for determining a road test load spectrum in the first embodiment in that:
step S12 is preceded by:
judging whether a target working condition lower than a damage threshold exists in each working condition according to the damage of each signal channel;
and if so, removing the target working condition, executing the total damage of each signal channel of the road test, which is obtained according to the standard cycle number of the road test and the damage of each signal channel, and determining the damage proportion of each working condition under each signal channel.
It can be understood that the purpose of re-editing the original load spectrum is to shorten the test time on the premise of ensuring the damage by reducing the cycle number of the working conditions with long test time and small damage, so as to further improve the efficiency or accuracy of load spectrum determination, when a target working condition which is extremely lower than a damage threshold exists in each working condition after the damage of each signal channel is obtained, the contribution of the target working condition to the road test is not large, and the calculation of the total damage and the damage ratio is performed after the target working condition is removed, where the damage threshold may be set according to an actual situation, and is not limited herein.
Further, in some optional embodiments of the present invention, step S13 may be preceded by:
acquiring the test time of each working condition, and judging whether the working condition to be removed meeting a preset removing condition exists in each working condition;
if so, removing the working condition to be removed, then executing the step of obtaining a damage proportion matrix of the damage proportion of each working condition under each signal channel, and determining the target cycle number of each working condition according to the damage proportion matrix, the test time of each working condition and the total damage of each signal channel of the road test so as to determine the target load spectrum of the road test;
and the preset removing condition is that the damage ratio of the working condition to be removed and the test time are both lower than a preset threshold value.
Specifically, in order to further improve the shortening of the test time by the load spectrum, the test time of each working condition and the damage ratio of each working condition are obtained, and when the damage ratio and the test time are both lower than a preset threshold, no contribution is made to the road test, and the working condition is removed.
In addition, in some optional embodiments of the present invention, after determining the target number of cycles, each operating condition may be screened and removed, specifically, the step of obtaining a damage ratio matrix of a damage ratio of each operating condition in each signal channel, and determining the target number of cycles of each operating condition according to the damage ratio matrix, the test time of each operating condition, and the total damage of each signal channel of the road test to determine the target load spectrum of the road test further includes:
acquiring the test time and the damage ratio of each working condition, and judging whether each working condition meets the condition of reducing the target cycle number or not according to the test time and the damage ratio;
and if so, reducing the target cycle number according to a preset rule.
Specifically, after the target cycle number of each working condition is determined, that is, after the cycle number of each working condition is adjusted for the first time, the cycle number of each working condition is further adjusted according to the test time and the damage proportion of each working condition, specifically, when each working condition meets the target cycle number reduction condition, the target cycle number of each working condition is reduced, wherein the target cycle number reduction condition is that the test time and the damage proportion both meet a reduction threshold, for example, the working condition where the test time is longer and the damage proportion is larger also correspondingly reduces the cycle number.
In summary, in the method for determining a road test load spectrum in the above embodiment of the present invention, by performing segmentation analysis on each working condition of an original load spectrum of a road test and determining a corresponding damage, and by performing total damage of each signal channel calculated through the damage and analysis on a damage proportion of each working condition, a number of working condition cycles with long time and small damage proportion can be reduced, and a number of working condition cycles with short time and large damage proportion can be increased accordingly, so that a total bench test time is also shortened on the premise of ensuring total damage of the original road test, each working condition is adjusted correspondingly according to the loss proportion and the test time, and a problem of long test time during a road test in the prior art is solved, and meanwhile, efficiency during the road test is further improved.
EXAMPLE III
Referring to fig. 2, there is shown a road test load spectrum determining apparatus according to a third embodiment of the present invention, the apparatus including:
the segmentation module 100 is configured to obtain an original load spectrum of a road test, and segment the original load spectrum according to each working condition in the original load spectrum to obtain a plurality of segments of original sub-load spectra;
an obtaining module 200, configured to obtain, according to all signal channels of each working condition in the multi-segment sub-original load spectrum, damage of each signal channel under each working condition;
the damage ratio determining module 300 is configured to obtain a total damage of each signal channel of the road test according to the number of standard cycles of the road test and the damage of each signal channel, and determine a damage ratio of each working condition in each signal channel;
and a target load spectrum determining module 400, configured to obtain a damage proportion matrix of the damage proportion of each working condition in each signal channel, and determine the target cycle number of each working condition according to the damage proportion matrix, the test time of each working condition, and the total damage of each signal channel of the road test, so as to determine the target load spectrum of the road test.
Further, the above road test load spectrum determination apparatus further includes:
the first judgment module is used for judging whether a target working condition lower than a damage threshold exists in each working condition according to the damage of each signal channel;
and if so, removing the target working condition, executing the total damage of each signal channel of the road test, which is obtained according to the standard cycle number of the road test and the damage of each signal channel, and determining the damage proportion of each working condition under each signal channel.
Further, the above road test load spectrum determination apparatus further includes:
the second judgment module is used for acquiring the test time of each working condition and judging whether the working condition to be removed meeting the preset removal condition exists in each working condition or not;
if so, removing the working condition to be removed, then executing the step of obtaining a damage proportion matrix of the damage proportion of each working condition under each signal channel, and determining the target cycle number of each working condition according to the damage proportion matrix, the test time of each working condition and the total damage of each signal channel of the road test so as to determine the target load spectrum of the road test;
and the preset removing condition is that the damage ratio of the working condition to be removed and the test time are both lower than a preset threshold value.
Further, in the road test load spectrum determination apparatus, the target load spectrum determination module is specifically configured to:
obtaining a damage ratio matrix according to the damage ratio of each working condition under each signal channel, and determining a cycle number matrix of the road test according to an equivalent principle of total damage of each signal channel of the road test so as to determine an initial target cycle number of each working condition;
and screening the initial target cycle number according to the test time of each working condition to obtain the target cycle number.
Further, the above road test load spectrum determination apparatus further includes:
the third judgment module is used for acquiring the test time and the damage ratio of each working condition and judging whether each working condition meets the condition of reducing the target cycle number or not according to the test time and the damage ratio;
if yes, reducing the target cycle number according to a preset rule;
wherein the target cycle number reduction condition is that the test time and the damage proportion both satisfy a target cycle number reduction threshold.
The functions or operation steps of the above modules when executed are substantially the same as those of the above method embodiments, and are not described herein again.
In addition, the road test load spectrum method provided by the invention is tested by determining the load spectrum of a simulation test of a certain rear axle road, and the test steps are as follows:
firstly, segmenting an original load spectrum according to working conditions, for example, a certain test specification is divided into 12 working conditions, analyzing and intercepting the load spectrum of the 12 working conditions, and respectively calculating the damage of all signal channels of the 12 working conditions:
calculating the total damage of the road test and the damage ratio of each working condition obtained by all signal channels according to the circulating number of the road test specification:
| Chan Title | total | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| acc@Hub_RL_X.RN_1 | 0.30360635 | 1.9％ | 1.2％ | 4.2％ | 0.4％ | 0.6％ | 0.5％ | 1.1％ | 1.5％ | 0.8％ | 1.1％ | 0.6％ | 1.7％ |
| acc@Hub_RL_Y.RN_1 | 0.02479412 | 3.3％ | 10.4％ | 3.5％ | 1.1％ | 0.7％ | 1.0％ | 0.8％ | 0.8％ | 1.3％ | 0.7％ | 0.4％ | 1.1％ |
| acc@Hub_RL_Z.RN_1 | 6.32606578 | 4.1％ | 3.9％ | 3.5％ | 0.6％ | 0.8％ | 1.6％ | 1.6％ | 1.9％ | 1.5％ | 0.8％ | 0.9％ | 1.0％ |
| acc@Hub_RR_X.RN_1 | 0.3350666 | 5.7％ | 4.2％ | 4.8％ | 1.3％ | 1.2％ | 1.0％ | 1.2％ | 1.2％ | 1.3％ | 0.7％ | 0.7％ | 1.9％ |
| acc@Hub_RR_Y.RN_1 | 0.01781167 | 4.3％ | 7.0％ | 3.5％ | 1.4％ | 0.9％ | 1.1％ | 0.8％ | 0.8％ | 1.5％ | 0.5％ | 0.7％ | 1.0％ |
| acc@Hub_RR_Z.RN_1 | 5.89327382 | 4.7％ | 3.9％ | 3.9％ | 1.1％ | 1.4％ | 2.3％ | 1.7％ | 1.3％ | 1.4％ | 0.7％ | 0.9％ | 0.9％ |
| acc@DianJi_L_X.RN_1 | 1.12070113 | 1.4％ | 1.0％ | 3.6％ | 0.8％ | 1.4％ | 0.7％ | 0.5％ | 1.4％ | 0.8％ | 1.6％ | 0.4％ | 1.8％ |
| acc@DianJi_L_Y.RN_1 | 0.14062146 | 1.6％ | 2.6％ | 1.5％ | 0.5％ | 0.3％ | 0.6％ | 0.4％ | 0.4％ | 0.5％ | 0.2％ | 0.3％ | 0.4％ |
| acc@DianJi_L_Z.RN_1 | 5.07715587 | 1.8％ | 2.0％ | 2.2％ | 0.2％ | 0.4％ | 0.8％ | 1.4％ | 1.0％ | 0.6％ | 0.8％ | 0.5％ | 0.5％ |
| acc@DianJi_B_X.RN_1 | 0.3281679 | 2.4％ | 2.6％ | 3.6％ | 0.8％ | 1.2％ | 0.6％ | 1.5％ | 1.1％ | 1.0％ | 1.1％ | 1.2％ | 1.7％ |
| acc@DianJi_B_Y.RN_1 | 0.03458218 | 3.3％ | 3.7％ | 2.1％ | 0.8％ | 0.7％ | 0.9％ | 0.6％ | 1.1％ | 1.0％ | 0.4％ | 0.4％ | 0.5％ |
| acc@DianJi_B_Z.RN_1 | 1.65669353 | 3.0％ | 2.3％ | 5.0％ | 0.6％ | 1.0％ | 1.7％ | 2.4％ | 1.7％ | 0.5％ | 1.8％ | 0.8％ | 1.0％ |
and (3) equivalent damage, rearranging and combining the working conditions, calculating a new working condition cycle number by using the matrix, and obtaining a new load spectrum cycle number matrix of the road simulation test:
wherein,
in order to obtain a matrix of the lesion proportion,
in the form of a cyclic matrix, the cyclic matrix,
is a target matrix;
checking the total damage and test time of the new load spectrum,
after the load spectrum is edited again through the road simulation test, the test time of the new load spectrum is 71% of the test time of the original load spectrum, and the damage of each channel is reserved by more than 98%. And the two load spectrums are proved to be consistent in test and equivalent.
Example four
Another aspect of the present invention also provides a readable storage medium on which a computer program is stored, the program, when executed by a processor, implementing the steps of the method according to any one of embodiments 1 to 2 above.
EXAMPLE five
Another aspect of the present invention further provides an electronic device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, and when the processor executes the computer program, the processor implements the steps of the method according to any one of embodiments 1 to 2.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
Those of skill in the art will understand that the logic and/or steps represented in the flowcharts or otherwise described herein, e.g., an ordered listing of executable instructions that can be viewed as implementing logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device.
More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium could even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, via for instance optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner if necessary, and then stored in a computer memory.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is specific and detailed, but not to be understood as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A method of road test load spectrum determination, the method comprising:
acquiring an original load spectrum of a road test, and segmenting the original load spectrum according to each working condition in the original load spectrum to obtain a plurality of segments of original load spectrums;
respectively acquiring the damage of each signal channel under each working condition according to all the signal channels under each working condition in the multi-segment original load spectrum;
obtaining the total damage of each signal channel of the road test according to the standard cycle number of the road test and the damage of each signal channel, and determining the damage ratio of each working condition under each signal channel;
and acquiring a damage ratio matrix of the damage ratio of each working condition under each signal channel, and determining the target cycle number of each working condition according to the damage ratio matrix, the test time of each working condition and the total damage of each signal channel of the road test so as to determine the target load spectrum of the road test.
2. The method for determining a road test load spectrum according to claim 1, wherein the step of obtaining a total damage of each signal channel of the road test according to the number of normalized cycles of the road test and damages of each signal channel and determining the damage ratio of each working condition under each signal channel further comprises:
judging whether a target working condition lower than a damage threshold exists in each working condition according to the damage of each signal channel;
and if so, removing the target working condition, executing the total damage of each signal channel of the road test, which is obtained according to the standard cycle number of the road test and the damage of each signal channel, and determining the damage ratio of each working condition under each signal channel.
3. The method for determining a road test load spectrum according to claim 1, wherein the step of obtaining a damage ratio matrix of damage ratios of each working condition under each signal channel, and determining the target cycle number of each working condition according to the damage ratio matrix, the test time of each working condition and the total damage of each signal channel of the road test to determine the target load spectrum of the road test further comprises:
acquiring the test time of each working condition, and judging whether the working condition to be removed meeting a preset removing condition exists in each working condition;
if so, removing the working condition to be removed, then executing the step of obtaining a damage proportion matrix of the damage proportion of each working condition under each signal channel, and determining the target cycle number of each working condition according to the damage proportion matrix, the test time of each working condition and the total damage of each signal channel of the road test so as to determine the target load spectrum of the road test;
and the preset removing condition is that the damage ratio of the working condition to be removed and the test time are both lower than a preset threshold value.
4. The method for determining the load spectrum of the road test according to claim 1, wherein the step of obtaining a damage proportion matrix of the damage proportion of each working condition in each signal channel, and determining the target cycle number of each working condition according to the damage proportion matrix, the test time of each working condition and the total damage of each signal channel of the road test to determine the target load spectrum of the road test comprises:
obtaining a damage ratio matrix according to the damage ratio of each working condition under each signal channel, and determining a cycle number matrix of the road test according to an equivalent principle of total damage of each signal channel of the road test so as to determine an initial target cycle number of each working condition;
and screening the initial target cycle number according to the test time of each working condition to obtain the target cycle number.
5. The method for determining a road test load spectrum according to claim 1, wherein the step of obtaining a damage ratio matrix of damage ratios of each working condition under each signal channel, and determining the target cycle number of each working condition according to the damage ratio matrix, the test time of each working condition and the total damage of each signal channel of the road test to determine the target load spectrum of the road test further comprises:
acquiring the test time and the damage ratio of each working condition, and judging whether each working condition meets the condition of reducing the target cycle number or not according to the test time and the damage ratio;
if yes, reducing the target cycle number according to a preset rule;
wherein the target cycle number reduction condition is that the test time and the damage proportion both satisfy a target cycle number reduction threshold.
6. A road test load spectrum determination apparatus, characterized in that the apparatus comprises:
the segmentation module is used for obtaining an original load spectrum of a road test and segmenting the original load spectrum according to each working condition in the original load spectrum to obtain a plurality of segments of original load spectrums;
the acquisition module is used for respectively acquiring the damage of each signal channel under each working condition according to all the signal channels under each working condition in the multi-segment sub-original load spectrum;
the damage ratio determining module is used for obtaining the total damage of each signal channel of the road test according to the standard cycle number of the road test and the damage of each signal channel, and determining the damage ratio of each working condition under each signal channel;
and the target load spectrum determining module is used for acquiring a damage proportion matrix of the damage proportion of each working condition in each signal channel, and determining the target cycle number of each working condition according to the damage proportion matrix, the test time of each working condition and the total damage of each signal channel of the road test so as to determine the target load spectrum of the road test.
7. The road test load spectrum determination device according to claim 6, further comprising:
the first judgment module is used for judging whether a target working condition lower than a damage threshold exists in each working condition according to the damage of each signal channel;
and if so, removing the target working condition, executing the total damage of each signal channel of the road test, which is obtained according to the standard cycle number of the road test and the damage of each signal channel, and determining the damage ratio of each working condition under each signal channel.
8. The road test load spectrum determination device of claim 6, further comprising:
the second judgment module is used for acquiring the test time of each working condition and judging whether the working condition to be removed meeting the preset removal condition exists in each working condition or not;
if so, removing the working condition to be removed, then executing the step of obtaining a damage proportion matrix of the damage proportion of each working condition under each signal channel, and determining the target cycle number of each working condition according to the damage proportion matrix, the test time of each working condition and the total damage of each signal channel of the road test so as to determine the target load spectrum of the road test;
and the preset removing condition is that the damage ratio of the working condition to be removed and the test time are both lower than a preset threshold value.
9. A readable storage medium, on which a computer program is stored, which program, when being executed by a processor, is adapted to carry out the steps of the method according to any one of claims 1 to 5.
10. An electronic device, comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the steps of the method according to any one of claims 1 to 5 when the program is executed by the processor.
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